#define IPT_EXTRA_CTL 143
#define IPT_ADD_CTL IPT_EXTRA_CTL
#define IPT_DEL_CTL IPT_EXTRA_CTL+1
#define IPT_FLUSH_CTL IPT_EXTRA_CTL+2
#define IPT_GET_NUM_CTL IPT_EXTRA_CTL
#define IPT_GET_RULE_CTL IPT_EXTRA_CTL+1
struct IPMAC {
   struct in_addr ip;
   unsigned char mac[ETH_ALEN];
};
